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  • 201.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Han, Shengnan
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    The Influence of Culture on IT Governance: A Literature Review2014Inngår i: 2014 47th Hawaii International Conference on System Sciences (HICSS) / [ed] Sprague, R. H., IEEE Computer Society, 2014, s. 4436-4445Konferansepaper (Fagfellevurdert)
    Abstract [en]

    IT governance is crucial for managers to regulate the decision rights and responsibilities that the desired IT behaviors and business objectives are aligned with each other. Additionally, culture in national, organizational or group level can play a role in IT governance and this role is rarely explored in academic research. This paper provides a literature review investigating the impact of culture on IT governance. It is aimed to find the linkage between these two concepts and to promote this area for future research. The literature review was done systematically and the findings are categorized by using an IT governance framework which includes three main components: structures, processes and relational mechanisms. The results indicate there is an influence from national and organizational culture on IT governance, especially on relational mechanisms. However, the number of studies is very few and there is still a lack of knowledge on how culture can influence IT governance.

  • 202.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Han, Shengnan
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    The Influence of Organizational Culture on IT Governance Performance: Case of The IT Department in a Large Swedish Company2016Inngår i: Proceedings of the 49th Annual Hawaii International Conference on System Sciences / [ed] Tung X. Bui; Ralph H. Sprague, Jr., IEEE Computer Society, 2016, s. 5157-5166Konferansepaper (Fagfellevurdert)
    Abstract [en]

    IT governance is one of the top concerns of organizations today seeking to gain value from their IT investments and create competitive advantage. Organizational culture on the other hand is one of the various factors influencing IT governance performance. However there is not much research conducted to understand this topic deeply. This research thus, is exploring the influence of organizational culture on four IT governance performance outcomes through a case study in IT department of a large Swedish company. The results provide evidence that organizational culture is influencing IT governance performance. Specifically the current clan culture orientation of the IT department has led to a successful IT governance performance in cost-effective use of IT. Furthermore adhocracy as the preferred culture is identified to influence IT governance in effective use of IT for growth which is not so successful with the current clan culture.

  • 203.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Han, Shengnan
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    The Role of Culture in IT Governance2014Inngår i: Americas Conference on Information Systems (AMCIS 2014): AMCIS 2014, Proceedings, AIS eLibrary , 2014Konferansepaper (Fagfellevurdert)
  • 204.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Leidner, Dorothy
    IT Organizational Structure Relationship with IT Governance Performance: Case of a Public Organization2017Inngår i: Information Technology Governance in Public Organizations: Theory and Practice / [ed] Lazar Rusu, Gianluigi Viscusi, Cham, Switzerland: Springer, 2017, nr 0, s. 229-252Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Information Technology (IT) is widely used in organizations and managers continue to struggle with how to govern IT. IT governance concerns the decision rights and division of responsibilities to achieve value from IT investments. Any IT governance approach is incorporated into a given organizational structure. However in the particular context of public organizations, there is little research on IT organizational structure relationship with IT governance performance. In this research, a case study is done in a public organization to find out how suitable is the organizational structure of the IT department is in relation with the IT governance performance. The results reveal that the IT department organizational structure needs to suit the IT governance performance desired outcomes. In this case, operating as a public organization has actuated the organization to focus on IT governance outcome of effective use of IT for growth. This together with the IT governance archetypes of this public organization for different IT decisions led the IT department leaders to adopt a matrix organizational structure.

  • 205.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Leidner, Dorothy
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Corrales Estrada, Martha
    How Does the Organizational Culture of Collaborative Networks Influence IT Governance Performance in a Large Organization?2018Inngår i: Proceedings of the 51st Annual Hawaii International Conference on System Sciences, 2018, s. 4941-4951Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In today's complex organizations, IT governance is an important managerial challenge. IT governance deals with decisions and responsibilities concerning IT. There are many factors influencing IT governance. One factor that has remained relatively unexplored by academic research is that of organizational culture. This research explores the influence of the organizational culture of collaborative networks on IT governance performance. A case study was conducted in a large complex company with several networks. The findings indicated that the networks desire different organizational culture types based on their priorities for IT governance outcomes. A clan organizational culture is desired when aiming for effective use of IT for asset utilization and cost effective use of IT. An adhocracy culture is desired when prioritizing the effective use of IT for business growth. Finally a combination of market and hierarchy organizational culture is desired when seeking effective use of IT for business flexibility and cost cutting.

  • 206.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Leidner, Dorothy
    Perjons, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Corrales Estrada, Martha
    What is the role of organizational culture in IT governance performance of collaborative virtual networks?2018Inngår i: International Journal of IT - Business Alignment and Governance, ISSN 1947-9611, E-ISSN 1947-962X, Vol. 9, nr 1, artikkel-id 2Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In today's complex organizations, IT governance is an important managerial challenge. IT governance deals with decisions and responsibilities concerning IT. There are many factors influencing IT governance. One factor that has remained relatively unexplored by academic research is that of organizational culture. This research explores the influence of the organizational culture of collaborative networks on IT governance performance. A case study was conducted in a large complex company with several networks. The findings indicated that the networks fit better with different organizational culture types based on their priorities for IT governance outcomes to maximize performance. A clan organizational culture is desired when aiming for effective use of IT for asset utilization and cost-effective use of IT. An adhocracy culture fits better when prioritizing the effective use of IT for business growth. Finally, a combination of market and hierarchy organizational culture is desired and fits better when seeking effective use of IT for business flexibility and cost cutting.

  • 207.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Vieru, Dragos
    The Role of Culture in IT Governance Five Focus Areas: A Literature Review2020Inngår i: Start-Ups and SMEs: Concepts, Methodologies, Tools, and Applications / [ed] Mehdi Khosrow-Pour, IGI Global, 2020, nr 1, s. 1664-1687Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Information technology governance (ITG) is one of the top challenges of managers today and culture in different level can have an important role while implementing IT governance. This is a new and significant issue, which has not been investigated deeply. This paper sets out to provide a systematic review of the literature, focusing on the role of culture in IT governance. The literature review findings are categorized through the lens of IT governance’s five focus areas which are IT strategic alignment, IT value delivery, Risk management, IT resource management and Performance measurement. This study contributes to the field of IT governance by reviewing and discussing the existing literature on the role of culture on IT governance. This literature review resulted that there are few research studies in this topic and many of the IT governance focus areas are not covered regarding the role of culture in these IT governance areas.

  • 208.
    Aasi, Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Vieru, Dragos
    The Role of Culture in IT Governance Five Focus Areas: A Literature Review2017Inngår i: International Journal of IT - Business Alignment and Governance, ISSN 1947-9611, E-ISSN 1947-962X, Vol. 8, nr 2, s. 42-61, artikkel-id 3Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Information technology governance (ITG) is one of the top challenges of managers today and culture in different level can have an important role while implementing IT governance. This is a new and significant issue, which has not been investigated deeply. This paper sets out to provide a systematic review of the literature, focusing on the role of culture in IT governance. The literature review findings are categorized through the lens of IT governance's five focus areas which are IT strategic alignment, IT value delivery, Risk management, IT resource management and Performance measurement. This study contributes to the field of IT governance by reviewing and discussing the existing literature on the role of culture on IT governance. This literature review resulted that there are few research studies in this topic and many of the IT governance focus areas are not covered regarding the role of culture in these IT governance areas.

  • 209.
    Aasi, Seyedeh Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Atug, Sebastian
    Institutionen för data- och systemvetenskap, Stockholms universitet. Sverige.
    Cermeno, Lorenzo
    för data- och systemvetenskap, Stockholms universitet. Sverige.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Digital Transformation Success Through Aligning the Organizational Structure: Case Study of Swedish Public Organizations2022Inngår i: AMCIS 2022 Proceedings, Association for Information Systems (AIS) , 2022Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A Digital Transformation fundamentally involves the implementation of one or more digital tools, which is a process often burdened with challenges. It is estimated that approximately 66 to 84 percent of the taken Digital Transformation initiatives are unsuccessful, which can be attributed to organizational shortcomings, more specifically structural ones. While public organizations regularly do not achieve the same success as those in the private sector, it was of interest to investigate the Swedish ones. Where 86 percent of residents use the internet to interact with public authorities. Previous research has singled out the IT organization to be the appointed leader of Digital Transformations, further research on that relationship is limited. Therefore, this study examines how the IT organization, in an agile environment, can align its structure for a successful Digital Transformation. To answer the discovered research problem, the following research question has been formulated: “How should an IT organization’s structure be aligned in an agile environment in order to achieve a successful Digital Transformation?”. This is research in progress and will be continued by conducting case studies in four public organizations. Data will be collected through semi0structured interviews and analyzed thematically. Finally, a presentation of different aspect of organizational structure alignment through digital transformation based on these cases will be provided.

  • 210.
    Aasi, Seyedeh Parisa
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Gråhns, Erik
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Geijer, Robin
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Rusu, Lazar
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Organizational Aspects in Achieving a Successful Digital Transformation: Case of an ERP System Change2022Inngår i: Information Systems: 18th European, Mediterranean, and Middle Eastern Conference, EMCIS 2021, Virtual Event, December 8–9, 2021, Proceedings / [ed] Marinos Themistocleous; Maria Papadaki, Springer, 2022, s. 653-666Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Digital transformation has been an interesting concept from the organizational perspective for a long time. The benefits of a successful digital transformation can take your organization into the next step by providing an increased organizational growth, aid market reachability by penetrating new and exciting markets, or enable your business operations to function to a greater extent than before with higher efficiency and lower lead times. Digital transformation is however a complex and diverse concept that means to integrate new innovations by using digital technology into the organization with the need of making greater organizational changes to succeed. This research, has explored how different organizational aspects like structural, technological and cultural ones can impact the success of a digital transformation during an ERP system change. A case study has been conducted in a company to identify how the current structural, technological, and cultural aspects influence the current digital transformation in that the company. The data was collected through interviews with employees having managerial roles and from internal documents of company and was analyzed using thematic analysis. The results show an agile approach, a more decentralized structure and high readiness for change, along with a transparent communication between management and co-workers to be beneficial for a successfully digital transformation.

  • 211.
    Aastrup, Karolina
    et al.
    Stockholms universitet, Humanistiska fakulteten, Institutionen för kultur och estetik.
    Granat, PaulinaStockholms universitet, Humanistiska fakulteten, Institutionen för kultur och estetik.Ribe, IsabelleStockholms universitet, Humanistiska fakulteten, Institutionen för kultur och estetik.
    Across and Beyond: Body and Landscape in Translation2022Collection/Antologi (Annet vitenskapelig)
    Abstract [en]

    Translation is a careful process of carrying across the fullness of a spoken, written, signed, hummed or visualised message. Unavoidably, things will get lost, or spilled, along the way. In this publication, edited by three students in the International MA in Curating Art at Stockholm University, eleven artists address the act of translating across both human and non-human communication, thereby creating new universes in which to exist.

    Fulltekst (pdf)
    Studies in Curating Art VII
  • 212.
    Aatela, Ann
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för barn- och ungdomsvetenskap.
    Tvillingskap, identitetsutveckling och delad eller gemensam skolgång.: - Resonemang bland föräldrar, lärare och tvillingar2009Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Fulltekst (pdf)
    FULLTEXT01
  • 213. Aayesh,
    et al.
    Bilal Qureshi, Muhammad
    Afzaal, Muhammad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Shuaib Qureshi, Muhammad
    Gwak, Jeonghwan
    Fuzzy-Based Automatic Epileptic Seizure Detection Framework2022Inngår i: Computers, Materials and Continua, ISSN 1546-2218, E-ISSN 1546-2226, Vol. 70, nr 3, s. 5601-5630Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Detection of epileptic seizures on the basis of Electroencephalogram (EEG) recordings is a challenging task due to the complex, non-stationary and non-linear nature of these biomedical signals. In the existing literature, a number of automatic epileptic seizure detection methods have been proposed that extract useful features from EEG segments and classify them using machine learning algorithms. Some characterizing features of epileptic and non-epileptic EEG signals overlap; therefore, it requires that analysis of signals must be performed from diverse perspectives. Few studies analyzed these signals in diverse domains to identify distinguishing characteristics of epileptic EEG signals. To pose the challenge mentioned above, in this paper, a fuzzy-based epileptic seizure detection model is proposed that incorporates a novel feature extraction and selection method along with fuzzy classifiers. The proposed work extracts pattern features along with time-domain, frequency domain, and non-linear analysis of signals. It applies a feature selection strategy on extracted features to get more discriminating features that build fuzzy machine learning classifiers for the detection of epileptic seizures. The empirical evaluation of the proposed model was conducted on the benchmark Bonn EEG dataset. It shows significant accuracy of 98% to 100% for normal vs. ictal classification cases while for three class classification of normal vs. inter-ictal vs. ictal accuracy reaches to above 97.5%. The obtained results for ten classification cases (including normal, seizure or ictal, and seizure-free or inter-ictal classes) prove the superior performance of proposed work as compared to other state-of-the-art counterparts.

  • 214. Aayesha,
    et al.
    Qureshi, Muhammad Bilal
    Afzaal, Muhammad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Qureshi, Muhammad Shuaib
    Fayaz, Muhammad
    Machine learning-based EEG signals classification model for epileptic seizure detection2021Inngår i: Multimedia tools and applications, ISSN 1380-7501, E-ISSN 1573-7721, Vol. 80, s. 17849-17877Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The detection of epileptic seizures by classifying electroencephalography (EEG) signals into ictal and interictal classes is a demanding challenge, because it identifies the seizure and seizure-free states of an epileptic patient. In previous works, several machine learning-based strategies were introduced to investigate and interpret EEG signals for the purpose of their accurate classification. However, non-linear and non-stationary characteristics of EEG signals make it complicated to get complete information about these dynamic biomedical signals. In order to address this issue, this paper focuses on extracting the most discriminating and distinguishing features of seizure EEG recordings to develop an approach that employs both fuzzy-based and traditional machine learning algorithms for epileptic seizure detection. The proposed framework classifies unknown EEG signal segments into ictal and interictal classes. The model is validated using empirical evaluation on two benchmark datasets, namely the Bonn and Children's Hospital of Boston-Massachusetts Institute of Technology (CHB-MIT) datasets. The obtained results show that in both cases, K-Nearest Neighbor (KNN) and Fuzzy Rough Nearest Neighbor (FRNN) give the highest classification accuracy scores, with improved sensitivity and specificity percentages.

  • 215.
    Aayesha, Aayesha
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Nouri, Jalal
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Afzaal, Muhammad
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Wu, Yongchao
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Li, Xiu
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Weegar, Rebecka
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    An Ensemble Approach for Question-Level Knowledge Tracing2021Inngår i: Artificial Intelligence in Education: 22nd International Conference, AIED 2021, Utrecht, The Netherlands, June 14–18, 2021, Proceedings, Part II / [ed] Ido Roll; Danielle McNamara; Sergey Sosnovsky; Rose Luckin; Vania Dimitrova, Cham: Springer , 2021, s. 433-437Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Knowledge tracing—where a machine models the students’ knowledge as they interact with coursework—is a well-established area in the field of Artificial Intelligence in Education. In this paper, an ensemble approach is proposed that addresses existing limitations in question-centric knowledge tracing and achieves the goal of predicting future question correctness. The proposed approach consists of two models; one is Light Gradient Boosting Machine (LightGBM) built by incorporating all relevant key features engineered from the data. The second model is a Multiheaded-Self-Attention Knowledge Tracing model (MSAKT) that extracts historical student knowledge of future question by calculating their contextual similarity with previously attempted questions. The proposed model’s effectiveness is evaluated by conducting experiments on a big Kaggle dataset achieving an Area Under ROC Curve (AUC) score of 0.84 with 84% accuracy using 10fold cross-validation.

  • 216.
    Abaas, Nicolina
    Stockholms universitet, Juridiska fakulteten, Juridiska institutionen.
    Kapitalbristreglerna i ABL - en ändamålsenlig och ekonomisk effektiv lagstiftning?2023Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    The Swedish capital deficiency rules in ch. 25 sec. 13-20a CA (ABL) constitute an important part of the company law. Their purpose is to ensure that creditors have the possibility to receive payment for their claims if the company encounters a liquidity crisis. The rules require the board of directors to take a specific course of action when the equity capital falls to 12 499 SEK or less. The board must first prepare a control balance sheet and have it review by the company’s auditor. If the control balance sheet shows that the company’s equity capital is not covered by at least half, the board needs to call a first general meeting where the shareholders must consider whether the company should be liquidated. If the shareholders decide to attempt to resolve the capital deficiency, the company enters into an eight-month period during which the shareholders have an opportunity to plan and take appropriate restructuring measures. Before the eight-month period expires, the board must prepare a second control balance sheet, obtain opinions from the auditor, and call for a second general meeting. At the second general meeting, the question of liquidation must be tried again. 

    The function of the capital deficiency rules as creditor protection has been subject to large criticism from both theorists and practitioners for many years. The regulatory framework is primarily criticized for not creating the right conditions for detecting and remedying existing capital deficiencies at an early stage. The economic efficiency is also questioned. Despite this, the legislator has not made any amendments in the law. One may wonder why? This essay analyzes and evaluated the capital deficiency rules in ch. 25 sec. 13-20a CA 

    The study shows that the capital deficiency rules in ch. 25 sec. 13-20a CA, as suspected, do not provide satisfactory protection. Instead, they appear misleading. The main reason for this is that the share capital requirement in ch. 1 sec. 5 CA is very low and does not consider individual companies’ capital needs or operational risks. The rules in ch. 25 sec. 13-20a CA are linked to the share capital requirement and do not lead to its intended effects as the company often already is insolvent when they enter. Thus, it results in unnecessary costs to fulfill the law’s requirements that otherwise could have been used to adequate measures. An example of a better legislation is wrong trading according to sec. 214 IA 1986 which is based on insolvency. The rule stipulates a standard that directors must uphold when the company approaches or reaches insolvency, thereby creating incentives for directors to manage capital deficiency situations in time. The rule provides a strong protection for all creditors and promotes economic efficiency. The legislator should therefore consider implementing such a system. 

    Fulltekst (pdf)
    fulltext
  • 217. Abalde, Samuel
    et al.
    Tellgren-Roth, Christian
    Heintz, Julia
    Pettersson, Olga Vinnere
    Jondelius, Ulf
    Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen, Avdelningen för zoologisk systematik och evolutionsforskning.
    The draft genome of the microscopic Nemertoderma westbladi sheds light on the evolution of Acoelomorpha genomes2023Inngår i: Frontiers in Genetics, E-ISSN 1664-8021, Vol. 14, artikkel-id 1244493Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Xenacoelomorpha is a marine clade of microscopic worms that is an important model system for understanding the evolution of key bilaterian novelties, such as the excretory system. Nevertheless, Xenacoelomorpha genomics has been restricted to a few species that either can be cultured in the lab or are centimetres long. Thus far, no genomes are available for Nemertodermatida, one of the group's main clades and whose origin has been dated more than 400 million years ago.Methods: DNA was extracted from a single specimen and sequenced with HiFi following the PacBio Ultra-Low DNA Input protocol. After genome assembly, decontamination, and annotation, the genome quality was benchmarked using two acoel genomes and one Illumina genome as reference. The gene content of three cnidarians, three acoelomorphs, four deuterostomes, and eight protostomes was clustered in orthogroups to make inferences of gene content evolution. Finally, we focused on the genes related to the ultrafiltration excretory system to compare patterns of presence/absence and gene architecture among these clades.Results: We present the first nemertodermatid genome sequenced from a single specimen of Nemertoderma westbladi. Although genome contiguity remains challenging (N50: 60 kb), it is very complete (BUSCO: 80.2%, Metazoa; 88.6%, Eukaryota) and the quality of the annotation allows fine-detail analyses of genome evolution. Acoelomorph genomes seem to be relatively conserved in terms of the percentage of repeats, number of genes, number of exons per gene and intron size. In addition, a high fraction of genes present in both protostomes and deuterostomes are absent in Acoelomorpha. Interestingly, we show that all genes related to the excretory system are present in Xenacoelomorpha except Osr, a key element in the development of these organs and whose acquisition seems to be interconnected with the origin of the specialised excretory system.Conclusion: Overall, these analyses highlight the potential of the Ultra-Low Input DNA protocol and HiFi to generate high-quality genomes from single animals, even for relatively large genomes, making it a feasible option for sequencing challenging taxa, which will be an exciting resource for comparative genomics analyses.

  • 218.
    Aban, Diana
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Sociologiska institutionen.
    Flinckman, Ghita
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Sociologiska institutionen.
    Giv oss idag vårt dagliga bröd: En kvalitativ studie om exkludering och aktörskap bland ålderspensionärer som besöker civilsamhällets matutdelningar.2022Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Sverige toppade nyligen en ranking som det land i världen som det är bäst att leva i avseende indikatorn livskvalité, totalplacering blev en femte plats. Det är positivt men vid sidan om topprankningar framträder en annan dyster verklighet mitt i det svenska välfärdssamhället. Civilsamhällets olika verksamheter med matutdelning utgör en nyckelroll i samhället. Dagligen ser vi medmänniskor köa för ett mål mat, en värmande kopp kaffe men kanske även för ett vänligt ord. Civilsamhällets aktörer synes utgöra en förutsättning för ett fungerande samhälle.  

    Syftet med studien är att utforska situationen för ålderspensionärer vilka diskursivt benämns ”fattigpensionärer” och som besöker civilsamhällets verksamheter som bedriver matutdelning, det som i media ofta benämns som ”soppkök”. Studien baseras på tolv semistrukturerade intervjuer med ålderspensionärer och personal. Studien utgår från klassteori, struktureringsteorin samt teorin om KASAM och belyser frågeställningar kring hur social stratifiering skapar exkludering, hur individen som aktör kan hantera sin livsvärld samt hur en känsla av sammanhang och tillhörighet är av betydelse för individen.  

    Resultaten påvisar att en del av de ålderspensionärer som varit med och byggt upp den svenska välfärden inte får den del av kakan i tillräckligt hög utsträckning, i stället har det blivit en daglig rutin att besöka civilsamhällets verksamheter för att få fysisk och social hunger mättad. Slutsatsen är att det föreligger exkludering men resultaten visar också på ålderspensionären som en handlingskraftig aktör.

    Studien vill vara en ögonöppnare för vem individen är som besöker civilsamhällets matutdelningar. När det är tydliggjort kan makthavare agera och sätta in de åtgärder som behövs för att säkerställa en välfärd för alla.

    Fulltekst (pdf)
    fulltext
  • 219.
    Abarca, David
    Stockholms universitet, Humanistiska fakulteten, Institutionen för Asien-, Mellanöstern- och Turkietstudier, Avdelningen för japanska.
    Förebyggandet av självmord: En komparativ studie mellan Sverige och Japan2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Fulltekst (pdf)
    fulltext
  • 220.
    Abarca-Pereda, Enrique
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Företagsekonomiska institutionen.
    Hungria Garcia, Rosane
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Företagsekonomiska institutionen.
    Technology Reshaping Relationships:: The case of FöreningsSparbanken2001Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
    Abstract [en]

    The financial system is currently undergoing structural changes all over the world. Thanks to the advances of technology, banks are also changing the way they interact with their customers. From a face-to-face to a faceless contact, via cash machines and the Internet, banks are urging to create effective communication channels that maintain close relationships with their customers. To better illustrate this situation, this study was based on the case of FöreningsSparbaken, a Swedish retail bank, which has a traditional structure and is also undergoing structural changes. With the implementation of new technologies, the bank's customers are experimenting some dissatisfaction concerning the new services provided. Little personal contact, reduction in service options and payment of Internet service fees are the major negative aspects that customers are facing with the bank's changes. These issues are addressed and discussed in this research on the basis of marketing approach.

  • 221. Abatangelo, Laura
    et al.
    Felli, Veronica
    Hillairet, Luc
    Léna, Corentin
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen.
    Spectral stability under removal of small capacity sets and applications to Aharonov–Bohm operators2019Inngår i: Journal of Spectral Theory, ISSN 1664-039X, E-ISSN 1664-0403, Vol. 9, nr 2, s. 379-427Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We first establish a sharp relation between the order of vanishing of a Dirichlet eigenfunction at a point and the leading term of the asymptotic expansion of the Dirichlet eigenvalue variation, as a removed compact set concentrates at that point. Then we apply this spectral stability result to the study of the asymptotic behaviour of eigenvalues of Aharonov–Bohm operators with two colliding poles moving on an axis of symmetry of the domain.

  • 222. Abatangelo, Laura
    et al.
    Felli, Veronica
    Léna, Corentin
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen.
    Eigenvalue variation under moving mixed Dirichlet–Neumann boundary conditions and applications2020Inngår i: ESAIM: Control, Optimisation and Calculus of Variations , ISSN 1292-8119, E-ISSN 1262-3377, Vol. 26, artikkel-id 39Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We deal with the sharp asymptotic behaviour of eigenvalues of elliptic operators with varying mixed Dirichlet–Neumann boundary conditions. In case of simple eigenvalues, we compute explicitly the constant appearing in front of the expansion’s leading term. This allows inferring some remarkable consequences for Aharonov–Bohm eigenvalues when the singular part of the operator has two coalescing poles.

    Fulltekst (pdf)
    fulltext
  • 223.
    Abathun, Addisalem
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen.
    Asymptotic distribution of zeros of a certain class of hypergeometric polynomials2014Licentiatavhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    The thesis consists of two papers, both treating hypergeometric polynomials, and a short introduction. The main results are as follows.In the first paper,we study the asymptotic zero distribution of a family of hypergeometric polynomials in one complex variable as their degree goes to infinity,using the associated differential equations that hypergeometric polynomials satisfy.   We describe in particular the curve complex on which the zeros cluster, as level curves associated to integrals on an algebraic curve derived from the equation.   The new result is first of all that we are able to formulate results on the location of zeros of generalized hypergeometric polynomials in greater generality than before (earlier results are mainly concerned with the Gauss hypergeometric case.) Secondly, we are able to formulate a precise conjucture giving the asymptotic behaviour of zeros in the generalized case of our polynomials, which covers previous results.In the second paper we partly prove one of the  conjectures in the first paper by using Euler integral representation of the Gauss hypergeometric functions together with the Saddle point method.

  • 224.
    Abathun, Addisalem
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen. Addis Ababa University, Ethiopia.
    Bøgvad, Rikard
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen.
    Asymptotic Distribution of Zeros of a Certain Class of Hypergeometric Polynomialsd2016Inngår i: Computational methods in Function Theory, ISSN 1617-9447, E-ISSN 2195-3724, Vol. 16, nr 2, s. 167-185Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We study the asymptotic behavior of the zeros of a family of a certain class of hypergeometric polynomials [GRAPHICS] , using the associated hypergeometric differential equation, as the parameters go to infinity. The curve configuration on which the zeros cluster is characterized as level curves associated with integrals on an algebraic curve. The algebraic curve is the hypergeometrc differential equation, using a similar approach to the method used in Borcea et al. (Publ Res Inst Math Sci 45(2):525-568, 2009). In a specific degenerate case, we make a conjecture that generalizes work in Boggs and Duren (Comput Methods Funct Theory 1(1):275-287, 2001), Driver and Duren (Algorithms 21(1-4):147-156, 1999), and Duren and Guillou (J Approx Theory 111(2):329-343, 2001), and present experimental evidence to substantiate it.

  • 225.
    Abathun, Addisalem
    et al.
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen. Addis Ababa University, Ethiopia.
    Bøgvad, Rikard
    Stockholms universitet, Naturvetenskapliga fakulteten, Matematiska institutionen.
    ZEROS OF A CERTAIN CLASS OF GAUSS HYPERGEOMETRIC POLYNOMIALS2018Inngår i: Czechoslovak Mathematical Journal, ISSN 0011-4642, E-ISSN 1572-9141, Vol. 68, nr 4, s. 1021-1031Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We prove that as n -> infinity, the zeros of the polynomial F-2(1) 9-n, (an + 2) (an + 1) ; z] cluster on (a part of) a level curve of an explicit harmonic function. This generalizes previous results of Boggs, Driver, Duren et al. (1999-2001) to the case of a complex parameter alpha and partially proves a conjecture made by the authors in an earlier work.

  • 226. Abazajian, Kevork
    et al.
    Addison, Graeme E.
    Adshead, Peter
    Ahmed, Zeeshan
    Akerib, Daniel
    Ali, Aamir
    Allen, Steven W.
    Alonso, David
    Alvarez, Marcelo
    Amin, Mustafa A.
    Anderson, Adam
    Arnold, Kam S.
    Ashton, Peter
    Baccigalupi, Carlo
    Bard, Debbie
    Barkats, Denis
    Barron, Darcy
    Barry, Peter S.
    Bartlett, James G.
    Thakur, Ritoban Basu
    Battaglia, Nicholas
    Bean, Rachel
    Bebek, Chris
    Bender, Amy N.
    Benson, Bradford A.
    Bianchini, Federico
    Bischoff, Colin A.
    Bleem, Lindsey
    Bock, James J.
    Bocquet, Sebastian
    Boddy, Kimberly K.
    Bond, J. Richard
    Borrill, Julian
    Bouchet, Francois R.
    Brinckmann, Thejs
    Brown, Michael L.
    Bryan, Sean
    Buza, Victor
    Byrum, Karen
    Caimapo, Carlos Hervias
    Calabrese, Erminia
    Calafut, Victoria
    Caldwell, Robert
    Carlstrom, John E.
    Carron, Julien
    Cecil, Thomas
    Challinor, Anthony
    Chang, Clarence L.
    Chinone, Yuji
    Cho, Hsiao-Mei Sherry
    Cooray, Asantha
    Coulton, Will
    Crawford, Thomas M.
    Crites, Abigail
    Cukierman, Ari
    Cyr-Racine, Francis-Yan
    de Haan, Tijmen
    Delabrouille, Jacques
    Devlin, Mark
    Di Valentino, Eleonora
    Dierickx, Marion
    Dobbs, Matt
    Duff, Shannon
    Dvorkin, Cora
    Eimer, Joseph
    Elleflot, Tucker
    Errard, Josquin
    Essinger-Hileman, Thomas
    Fabbian, Giulio
    Feng, Chang
    Ferraro, Simone
    Filippini, Jeffrey P.
    Flauger, Raphael
    Flaugher, Brenna
    Fraisse, Aurelien A.
    Frolov, Andrei
    Galitzki, Nicholas
    Gallardo, Patricio A.
    Galli, Silvia
    Ganga, Ken
    Gerbino, Martina
    Gluscevic, Vera
    Goeckner-Wald, Neil
    Green, Daniel
    Grin, Daniel
    Grohs, Evan
    Gualtieri, Riccardo
    Gudmundsson, Jón E.
    Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC). Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Gullett, Ian
    Gupta, Nikhel
    Habib, Salman
    Halpern, Mark
    Halverson, Nils W.
    Hanany, Shaul
    Harrington, Kathleen
    Hasegawa, Masaya
    Hasselfield, Matthew
    Hazumi, Masashi
    Heitmann, Katrin
    Henderson, Shawn
    Hensley, Brandon
    Hill, Charles
    Hill, J. Colin
    Hlozek, Renee
    Ho, Shuay-Pwu Patty
    Hoang, Thuong
    Holder, Gil
    Holzapfel, William
    Hood, John
    Hubmayr, Johannes
    Huffenberger, Kevin M.
    Hui, Howard
    Irwin, Kent
    Jeong, Oliver
    Johnson, Bradley R.
    Jones, William C.
    Kang, Jae Hwan
    Karkare, Kirit S.
    Katayama, Nobuhiko
    Keskitalo, Reijo
    Kisner, Theodore
    Knox, Lloyd
    Koopman, Brian J.
    Kosowsky, Arthur
    Kovac, John
    Kovetz, Ely D.
    Kuhlmann, Steve
    Kuo, Chao-lin
    Kusaka, Akito
    Lahteenmaki, Anne
    Lawrence, Charles R.
    Lee, Adrian T.
    Lewis, Antony
    Li, Dale
    Linder, Eric
    Loverde, Marilena
    Lowitz, Amy
    Lubin, Phil
    Madhavacheril, Mathew S.
    Mantz, Adam
    Marques, Gabriela
    Matsuda, Frederick
    Mauskopf, Philip
    McCarrick, Heather
    McMahon, Jeffrey
    Meerburg, P. Daniel
    Melin, Jean-Baptiste
    Menanteau, Felipe
    Meyers, Joel
    Millea, Marius
    Mohr, Joseph
    Moncelsi, Lorenzo
    Monzani, Maria
    Mroczkowski, Tony
    Mukherjee, Suvodip
    Nagy, Johanna
    Namikawa, Toshiya
    Nati, Federico
    Natoli, Tyler
    Newburgh, Laura
    Niemack, Michael D.
    Nishino, Haruki
    Nord, Brian
    Novosad, Valentine
    O'Brient, Roger
    Padin, Stephen
    Palladino, Steven
    Partridge, Bruce
    Petravick, Don
    Pierpaoli, Elena
    Pogosian, Levon
    Prabhu, Karthik
    Pryke, Clement
    Puglisi, Giuseppe
    Racine, Benjamin
    Rahlin, Alexandra
    Rao, Mayuri Sathyanarayana
    Raveri, Marco
    Reichardt, Christian L.
    Remazeilles, Mathieu
    Rocha, Graca
    Roe, Natalie A.
    Roy, Anirban
    Ruhl, John E.
    Salatino, Maria
    Saliwanchik, Benjamin
    Schaan, Emmanuel
    Schillaci, Alessandro
    Schmitt, Benjamin
    Schmittfull, Marcel M.
    Scott, Douglas
    Sehgal, Neelima
    Shandera, Sarah
    Sherwin, Blake D.
    Shirokoff, Erik
    Simon, Sara M.
    Slosar, Anze
    Spergel, David
    St Germaine, Tyler
    Staggs, Suzanne T.
    Stark, Antony
    Starkman, Glenn D.
    Stompor, Radek
    Stoughton, Chris
    Suzuki, Aritoki
    Tajima, Osamu
    Teply, Grant P.
    Thompson, Keith
    Thorne, Ben
    Timbie, Peter
    Tomasi, Maurizio
    Tristram, Matthieu
    Tucker, Gregory
    Umilta, Caterina
    van Engelen, Alexander
    Vavagiakis, Eve M.
    Vieira, Joaquin D.
    Vieregg, Abigail G.
    Wagoner, Kasey
    Wallisch, Benjamin
    Wang, Gensheng
    Watson, Scott
    Westbrook, Ben
    Whitehorn, Nathan
    Wollack, Edward J.
    Wu, W. L. Kimmy
    Xu, Zhilei
    Yang, H. Y. Eric
    Yasini, Siavash
    Yefremenko, Volodymyr G.
    Yoon, Ki Won
    Young, Edward
    Yu, Cyndia
    Zonca, Andrea
    CMB-S4: Forecasting Constraints on Primordial Gravitational Waves2022Inngår i: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 926, nr 1, artikkel-id 54Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding of the origin and evolution of the universe. Among the science cases pursued with CMB-S4, the quest for detecting primordial gravitational waves is a central driver of the experimental design. This work details the development of a forecasting framework that includes a power-spectrum-based semianalytic projection tool, targeted explicitly toward optimizing constraints on the tensor-to-scalar ratio, r, in the presence of Galactic foregrounds and gravitational lensing of the CMB. This framework is unique in its direct use of information from the achieved performance of current Stage 2–3 CMB experiments to robustly forecast the science reach of upcoming CMB-polarization endeavors. The methodology allows for rapid iteration over experimental configurations and offers a flexible way to optimize the design of future experiments, given a desired scientific goal. To form a closed-loop process, we couple this semianalytic tool with map-based validation studies, which allow for the injection of additional complexity and verification of our forecasts with several independent analysis methods. We document multiple rounds of forecasts for CMB-S4 using this process and the resulting establishment of the current reference design of the primordial gravitational-wave component of the Stage-4 experiment, optimized to achieve our science goals of detecting primordial gravitational waves for r > 0.003 at greater than 5σ, or in the absence of a detection, of reaching an upper limit of r < 0.001 at 95% CL.

  • 227. Abazov, V. M.
    et al.
    Abbott, B.
    Abolins, M.
    Åsman, Barbro
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Search for Events with Leptonic Jets and Missing Transverse Energy in p(p)over-bar Collisions at root s=1.96 TeV2010Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 105, nr 21, s. 211802-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We present the first search for pair production of isolated jets of charged leptons in association with a large imbalance in transverse energy in pp̅ collisions using 5.8  fb-1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron Collider. No excess is observed above the standard model background, and the result is used to set upper limits on the production cross section of pairs of supersymmetric chargino and neutralino particles as a function of “dark-photon” mass, where the dark photon is produced in the decay of the lightest supersymmetric particle

  • 228. Abazov, V. M.
    et al.
    Abbott, B.
    Abolins, M.
    Åsman, Barbro
    Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
    Search for Sneutrino Production in e mu Final States in 5.3 fb(-1) of p(p)over-bar Collisions at root s = 1.96 TeV2010Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 105, nr 19, s. 191802-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We report the results of a search for R parity violating (RPV) interactions leading to the production of supersymmetric sneutrinos decaying into eμ final states using 5.3  fb-1 of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. Having observed no evidence for production of eμ resonances, we set direct bounds on the RPV couplings λ311 and λ312 as a function of sneutrino mass.

  • 229.
    Abbas, Haider
    et al.
    KTH, School of ICT, Electronic Systems.
    Magnusson, Christer
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    ICT/Materialfysik.
    Addressing Dynamic Issues in Information Security Management2011Inngår i: Information Management & Computer Security, ISSN 0968-5227, E-ISSN 1758-5805, Vol. 19, nr 1, s. 5-24Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    Ett ramverk för behandling av osäkerhet inom ledningssystem för informationssäkerhet presenteras. Ramverket baseras på teorier från corporate finance. En fallstudie visar hur ramverket kan appliceras.

  • 230. Abbas, Haider
    et al.
    Magnusson, Christer
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    Architectural Description of an Automated System for Uncertainty Issues Management in Information Security2010Inngår i: International Journal of computer Science and Information Security, ISSN 1947-5500, Vol. 8, nr 3, s. 59-67Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Information technology evolves at a faster pace giving organizations a limited scope to comprehend and effectively react to steady flux nature of its progress. Consequently the rapid technological progression raises various concerns for the IT system of an organization i.e. existing hardware/software obsoleteness, uncertain system behavior, interoperability of various components/method, sudden changes in IT security requirements and expiration of security evaluations. These issues are continuous and critical in their nature that create uncertainty in IT infrastructure and threaten the IT security measures of an organization. In this research, Options theory is devised to address uncertainty issues in IT security management and the concepts have been developed/validated through real cases on SHS (Spridnings-och-Hämtningssystem) and ESAM (E-society) systems. AUMSIS (Automated Uncertainty Management System in Information Security) is the ultimate objective of this research which provides an automated system for uncertainty management in information security. The paper presents the architectural description of AUMSIS, its various components, information flow, storage and information processing details using options valuation techniques. It also presents heterogeneous information retrieval problems and their solution. The architecture is validated with examples from SHS system

  • 231. Abbas, Haider
    et al.
    Orlandi, Eugenio
    Aslam Khan, Farrukh
    Popov, Oliver
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Masood, Asif
    Security, Safety and Trust Management2017Inngår i: 2017 IEEE 26th International Conference on Enabling Technologies: Infrastructure for Collaborative Enterprises: Proceedings / [ed] Sumitra Reddy, Wojciech Cellary, Mariagrazia Fugini, IEEE Computer Society, 2017, s. 242-243Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The continuously evolving nature of today's internet outdates the existing security and safety mechanisms and therefore there is an emerging need to propose robust, powerful and reliable solutions. These advancements have a great impact on the software and system architectures, resulting in a highly dynamic smart networked environment. The systems used within these complex environments have at least two things in common, namely, the need to restrict or grant access for the required resources based on security policy to face security threats, and the need to sustain resilience of the environment in face of safety hazards. Both aspects should consider trust.

  • 232. Abbas, Haider
    et al.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    Adaptability Infrastructure for Bridging IT Security Evaluation and Options theory2009Inngår i: SIN'09, October 6-10, 2009, North Cyprus, Turkey, 2009Konferansepaper (Fagfellevurdert)
  • 233. Abbas, Haider
    et al.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    Empowering Security Evaluation of IT Products with Option Theory2009Inngår i: 30th IEEE Symposium on Security and Privacy, Oakland, California, USA, 2009Konferansepaper (Fagfellevurdert)
  • 234. Abbas, Haider
    et al.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    Option Based evaluation: Security Evaluation of IT Products Based on Options Theory2009Inngår i: IEEE ECBS-EERC, Novi Sad Serbia, 2009Konferansepaper (Fagfellevurdert)
  • 235. Abbas, Haider
    et al.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Hemani, Ahmed
    ROA Based Agile Security Evaluation of IT Products for Developing Countries2009Konferansepaper (Annet vitenskapelig)
  • 236. Abbas, Haider
    et al.
    Yngström, Louise
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Säkerhetsinformatik.
    Hemani, Ahmed
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap. Mikroelektronik och tillämpad fysik. Tillämpad IT. Tillämpad IT med entreprenörskap.
    Security Evaluation of Products: Bridging the Gap between Common Criteria (CC) and Real Option Thinking2008Inngår i: WCECS, 2008Konferansepaper (Annet vitenskapelig)
  • 237. Abbas, Muhammad Ghazanfar
    et al.
    Haris, Abdullah
    Binyameen, Muhammad
    Nazir, Abdul
    Mozūratis, Raimondas
    Stockholms universitet, Naturvetenskapliga fakulteten, Zoologiska institutionen. Nature Research Centre, Lithuania.
    Azeem, Muhammad
    Chemical Composition, Larvicidal and Repellent Activities of Wild Plant Essential Oils against Aedes aegypti2023Inngår i: Biology, E-ISSN 2079-7737, Vol. 12, nr 1, artikkel-id 8Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bio-degradable and eco-friendly essential oils (EOs) extracted from Mentha longifolia, Salsola imbricata, Erigeron bonariensis, E. canadensis, Ailanthus altissima, and Zanthoxylum armatum were investigated for their repellent and larvicidal potential against Aedes aegypti mosquitoes. The EOs of M. longifolia, S. imbricata, E. bonariensis, E. canadensis, A. altissima, and Z. armatum exhibited 99.0%, 96.8%, 40.2%, 41.7%, 29.1%, and 13.2% repellency against mosquitoes at a tested dose of 33.3 μg/cm2, respectively. In time span bioassays, the EOs of M. longifolia, S. imbricata, E. bonariensis, and E. canadensis showed more than 40% repellency for 60 min at a tested dose of 330 μg/cm2. Larvicidal bioassays revealed that larvae of Ae. aegypti were the most susceptible to M. longifolia (LC50, 39.3 mg/L), E. bonariensis (LC50, 26.0 mg/L), E. canadensis (LC50, 35.7 mg/L), and Z. armatum (LC50, 35.9 mg/L) EOs upon 48 h exposure. The most abundant constituents in the EOs of M. longifolia, S. imbricata, E. bonariensis, E. canadensis and A. altissima were piperitone oxide (45.5%), carvone (39.9%), matricaria ester (43.1%), (31.7%) and eugenol (24.4%), respectively. Our study demonstrates that EOs of M. longifolia, S. imbricata, E. bonariensis, and E. canadensis might be used to control Ae. aegypti mosquitoes without harming humans or the environment.

  • 238.
    Abbas, Sheimaa
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för socialt arbete - Socialhögskolan.
    Feminism och mångkulturalism: en fallstudie om motsättningar mellan individrättigheter och grupprättigheter2005Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [sv]

    Hedersrelaterat våld och praktiserandet av traditioner som arrangerade äktenskap och polygami har aktualiserat diskurser rörande erkännande av kulturella divergenser i en rad västliga länder. Studiens syfte är att belysa ståndpunkter i diskursen som rör kvinnors individuella rättigheter och gruppens rättigheter i ett mångkulturellt sammanhang vilket sker ut ett textanalytiskt perspektiv samt ur det levda livets. Jag utgår från filosofen Martha Nussbaum teori om mänskliga funktionsförmågor och definition av mänskliga rättigheter. Jag har analyserat två aktörers texter i diskursen, Susan Moller Okin (förespråkar individrättigheter) samt Charles Taylor (förespråkar grupprättigheter). Studiens centrala fråga samt övergripande frågeställningar är:

    Vad är mänskliga rättigheter?

    - ur det filosofiska perspektivet,

    - ur Taylors respektive Okins ståndpunkter och

    - ur det levda livets?

    Jag har intervjuat en kvinna, från en annan kulturell kontext än den svenska, om hennes valmöjligheter och handlingsutrymme. Jag kom fram till att Okins perspektiv överensstämmer med Nussbaum angående huruvida individens rättigheter skall ges företräde framför gruppens preferenser, vilket de bör enligt min analys, medan Taylor står längre ifrån och i vissa avseenden går helt emot Nussbaums teori.

    Fulltekst (pdf)
    FULLTEXT01
  • 239. Abbas, Sk Jahir
    et al.
    Ramacharyulu, P. V. R. K.
    Lo, Hsin-Hsi
    Ali, Sk Imran
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK).
    Ke, Shyue-Chu
    A catalytic approach to synthesis of PLP analogs and other environmental protocols in a single handed CaO/TiO2 green nanoparticle2017Inngår i: Applied Catalysis B: Environmental, ISSN 0926-3373, E-ISSN 1873-3883, Vol. 210, s. 276-289Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As our precursory stage we have focus straight forward on clean catalytic approach for the production of C3 substituted pyridoxal-5 '-phosphate analogues of vitamin B6, and other environmental protocols like photocatalytic activity, green fossil fuels and c-c coupling using efficient biocompatible eggshell related unrivalled materials which show versatility of the catalytic effect on different inorganic support. The eggshell immobilized nanoparticles have encouraging relevance in creation of new molecules and can advantageously be studied by various spectroscopic, thermal and elemental analyses like powder X-ray diffraction (XRD), Raman spectroscopy, UV-vis, Scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) surface area analysis. The elucidate nature of nanoparticles offer: more active site acts as lewis acid, vacancies on the catalyst surface and good to better yield of C3 substituted deoxy and 2-nor deoxy coenzyme pyridoxine (PN), coupling products propargylamines (PA), photo degrading enhancement of MB and nucleophilic substituted fatty acid (BD). This enzyme cofactor explore molecular synthons to synthetic equivalent: 3-deoxy and 2-nor-3-deoxy pyridoxal (PL), pyridoxal oxime (P0), pyridoxamine (PM) and mono phosphate derivative of 3-deoxyPM, 3-deoxyPL respectively and chemistry of selective oxidation and schiff base mechanism was studied and complemented through combined experimental and theoretical molecular orbital calculation consequently. The heterogeneous catalyst has strong selective ability towards selective reducing pyridine diester, bioactive intermediates substances and holds vast potential towards separation for the photogenerated electron-hole pairs and renewable, nontoxic, biodegradable green fossil fuels. The catalyst including environmental concern is reapplicable and strong impressive that can unfold the space of worthy metal component widely and facilitate the scope to take a vital role in different fileds like catalysis, biochemistry, nanoscience, energy and materials science.

  • 240. Abbasi, A.
    et al.
    Damian Risberg, Emilana
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Eriksson, Lars
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Mink, Janos
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Persson, I.
    Sandström, Magnus
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Sidorov, Y. V.
    Skripkin, Michail
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Ullström, A-S
    Crystallographic and Vibrational Spectroscopic Studies of Octakis(DMSO)lanthanoid(III) Iodides2007Inngår i: Inorganic Chemistry, Vol. 46, s. 7731-7741Artikkel i tidsskrift (Fagfellevurdert)
  • 241. Abbasi, A
    et al.
    Eriksson, Lars
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Beheshti, S
    Kianmehr, E
    Dimethyl 2-chloro-3-tosylmaleate2007Inngår i: Acta Crystallographica Section E, Vol. E63, s. o3774-Artikkel i tidsskrift (Fagfellevurdert)
  • 242. Abbasi, A
    et al.
    Golchoubian, H
    Khaniani, Y
    Eriksson, Lars
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Badiei, A
    N,N'-Bis(2,6-dichlorobenzyl)ethylenediimine2007Inngår i: Acta Crystallographica Section E, Vol. E63, s. o3773-Artikkel i tidsskrift (Fagfellevurdert)
  • 243. Abbasi, A.
    et al.
    Habibian, M.
    Sandström, Magnus
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    mer-Trichloridotris(dimethyl sulfide-kS)-rhodium(III)2007Inngår i: Acta Crystallographica, Vol. E63, s. m1904-Artikkel i tidsskrift (Fagfellevurdert)
  • 244.
    Abbasi, Abdul
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Muftic, Sead
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    CryptoNET: integrated secure workstation2009Inngår i: International Journal of Advanced Science and Technology, ISSN 2005-4238, Vol. 12Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In most of the current applications security is usually provided individually. This means that various applications use their own security mechanisms and services, applied only to their own resources and functions. Furthermore, procedures to configure security parameters are usually inconvenient and complicated for non-technical users. As an alternative to this approach, we have designed and implemented Secure Workstation, which represents an integrated security environment and protects local IT resources, messages and operations across multiple applications. It comprises five components, i.e. four most commonly used PC applications: Secure Station Manager (equivalent to Windows Explorer), Secure E-Mail Client, Secure Documents System, and Secure Browser. These four components for their security extensions use functions and credentials of the fifth component, Generic Security Provider [5]. With this approach, we provide standard security services (authentication, confidentiality, and integrity and access control) and also additional, extended security services, such as transparent handling of certificates, use of smart cards, strong authentication protocol, SAML based single-singe-on, secure sessions, and other security functions, to all PC applications with the same set of security modules and parameters.

  • 245.
    Abbasi, Abdul
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Muftic, Sead
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Gernot, Schmölzer
    A Model and Design of a Security Provider for Java Applications2009Inngår i: International Conference on Risks and Security of Internet and Systems, Toulouse, France: Yves Deswarte , 2009, Vol. 1, nr 4Konferansepaper (Fagfellevurdert)
  • 246.
    Abbasi, Abdul
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Muftic, Sead
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Gernot, Schmölzer
    CryptoNET: Design and Implementation of the Secure Email System2009Inngår i: International Workshop on Security and Communication Networks, Trondheim, Norway: Svein Johan Knapskog , 2009, Vol. 1, nr 1Konferansepaper (Fagfellevurdert)
  • 247.
    Abbasi, Abdul
    et al.
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Muftic, Sead
    Stockholms universitet, Samhällsvetenskapliga fakulteten, Institutionen för data- och systemvetenskap.
    Gernot, Schmölzer
    CryptoNET: Secure Federation Protocol and Authorization Policies for SMI2009Inngår i: International Conference on Risks and Security of Internet and Systems, Toulouse, France: Yves Deswarte , 2009, Vol. 1, nr 4Konferansepaper (Fagfellevurdert)
  • 248.
    Abbasi, Alireza
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Structural and Spectroscopic Studies of Solvated Metal Ions2005Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Crystallographic and spectroscopic studies have been performed of structures, coordination and chemical bonding for series of trivalent metal ions solvated by two oxygen-coordinating solvents, water and dimethyl sulfoxide (DMSO). The hydrated scandium(III) and lanthanoid(III) ions, La to Lu, are surrounded by tricapped trigonal prisms of aqua ligands in the isomorphous series of trifluoromethanesulfonates, [M(H2O)n](CF3SO3)3. For the smallest ions, M = Er, Tm, Yb, Lu, Sc, the hydration numbers decrease, n = 8.96(5), 8.8(1), 8.7(1), 8.5(1), 8.0(1), respectively, with decreasing size of the ion. The crystal structures at ambient temperature indicate randomly distributed vacancies of the capping oxygen atoms, and 2H solid-state NMR of the diamagnetic [M(H2O)n](CF3SO3)3, M = Sc, Lu, Y and La compounds revealed increasing mobility of the water ligands in the coordination sphere with increasing temperature, also for the fully nonahydrated LaIII and YIII ions. The stretching force constants of the Ln-O bonds, evaluated from vibrational spectroscopy, increased from 0.81 to 1.16 N cm-1 for the Ln-6O trigonal prism in a smooth correlation with the bond distances from La to Lu. For the capping Ln-3O bonds the increase from 0.49 to 0.65 N cm-1 reflects the increased ligand-ligand repulsion with decreasing ion size. This is also the reason for the water deficiency of the Er, Tm, Yb, Lu and Sc salts, and for [Sc(H2O)8.0](CF3SO3)3 the repulsion induced a phase transition at about 185 K that, by low temperature crystallography, was found to distort the coordination of water molecules toward a monocapped trigonal prism around the scandium(III) ion.

    All crystal structures of the octakis(dimethyl sulfoxide)lanthanoid(III) iodides comprise discrete [Ln(dmso)8]3+ complexes surrounded by iodide ions. The lanthanum(III) and praseodymium(III) compounds crystallize in the orthorhombic space group Pbca with more efficient packing than for the heavier and smaller ions in the lanthanoid series, which crystallize in the monoclinic space group P21/n. The group 13 metal ions, aluminium(III), gallium(III), indium(III), thallium(III), and also scandium(III) of group 3, form crystalline hexakis(dimethyl sulfoxide) solvates in the space group R 3, with octahedral MO6 coordination entities, which are increasingly compressed along one threefold axis for increasing ionic size. EXAFS measurements on the solvated ions display similar M-O bond distances in dimethyl sulfoxide solution as in the solid solvates. For all the solid dimethyl sulfoxide solvates the strength and nature of the metal-oxygen bond has been evaluated by normal coordinate analysis of vibrational spectra, and correlated with the S-O stretching vibrational mode.

    Distortions from regular octahedral six coordination are discussed for the hydrated isoelectronic soft mercury(II) and thallium(III) ions in the solid bisaquamercury(II) and trisaquatallium(III) trifluoromethanesulfonates, in terms of pseudo Jahn-Teller effects (PJTE). Mercury(II), generally more strongly influenced by PJTE distortions, displays a 2 + 4 Hg-O coordination forming chains that are held together in sheets by hydrogen bonds and in layers by van der Waals interactions, which explain the fragile structure of the crystals.

    Fulltekst (pdf)
    FULLTEXT01
  • 249. Abbasi, Alireza
    et al.
    Adib, Mehdi
    Eriksson, Lars
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi.
    Dimethyl 3-(tert-butylamino)-5-oxo-7-phenyl-1H,5H-pyrazolo[1,2-a]pyrazole-1,2-dicarboxylate2007Inngår i: Acta Crystallographica Section E, Vol. E63, s. o2115–o2116-Artikkel i tidsskrift (Fagfellevurdert)
  • 250. Abbasi, Alireza
    et al.
    Badiei, Alireza
    Khaniani, Yeganeh
    Golchoubian, Hamid
    Eriksson, Lars
    Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK), Avdelningen för oorganisk kemi och strukturkemi.
    N,N '-bis(2,6-dichlorobenzyl)ethylene-diimine2007Inngår i: Acta Crystallographica Section E: Structure Reports Online, E-ISSN 1600-5368, Vol. 63, s. o3773-U2712Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In the centrosymmetric title compound, C16H12Cl4N2, the asymmetric unit is one half-molecule. Weak van der Waals interactions between the molecules are effective in the molecular packing. This is the first reported structure of a chloro-substituted benzaldehyde derivative that can potentially form a tetradentate ligand.

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